38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
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#!/bin/python
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with open("input", 'r') as input:
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possible_seats = dict(zip([i for i in range(127 * 8 + 8)], [True for _ in range(127 * 8 + 8)]))
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for line in input:
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line = line.strip()
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row_lower = 0
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row_upper = 127
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col_lower = 0
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col_upper = 7
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row_chars = line[:7]
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col_chars = line[7:]
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for char in row_chars:
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if char == 'F':
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row_upper = (row_lower + row_upper) // 2
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elif char == 'B':
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row_lower = (row_lower + row_upper) // 2
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for char in col_chars:
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if char == 'L':
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col_upper = (col_lower + col_upper) // 2
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elif char == 'R':
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col_lower = (col_lower + col_upper) // 2
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seat_id = row_upper * 8 + col_upper
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possible_seats[seat_id] = False
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for seat_id in possible_seats:
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try:
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if possible_seats[seat_id] and not possible_seats[seat_id - 1] and not possible_seats[seat_id + 1]:
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print(seat_id)
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except:
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pass
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